many a mickle makes a muckle, small things together become a large thing; literally dust, if piled up, becomes a mountain

(Japanese mythology) the fabled mountain at the 高天原 (takama no hara, “heavens”)

things are not as scary as they seems

perseverance and hard work can overcome any obstacle; where there's a will, there's a way

many mountains and rivers

(Japanese mythology) son of 瓊瓊杵 (Ninigi) and 木花開耶姫 (Ko no Hana no Sakuyabime), younger brother of 火照 (Hoderi), husband of 豊玉姫 (Toyotamabime), father of 鸕鷀草葺不合 (Ugaya Fukiaezu) and grandfather of Emperor Jinmu; he was known to have a conflict with his brother in the myth 海幸山幸 (Umisachi Yamasachi, “Luck of the Sea and Luck of the Mountain”)

neither fish nor fowl, up in the air